Window sash holder and lock



Julie 27, 1939.

c. E AXTELL WINDOW SASH HOLDER AND LOCK Filed May 26, 1938 2 Sheets-Sheet 2 12 u la A torneus Patented June 27, 1939 UNITED STATES PATENTv OFFICE 2 Claims.

This invention relates to devices used in connection with window sashes for holding the sash in a raised position, and in accordance with the present invention improved means is provided both for holding the sash in raised position and also for locking the sash securely at the desired position of adjustment.

The invention consists in the provision of means for holding the upper and lower sashes at the desired position of adjustment and for releasing the sashes simultaneously so that either or both may be raised or lowered as found desirable.

The invention together with its objects and advantages will be understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figur-e 1 is an enlarged detail sectional view through a portion of a window frame and upper `20 and lower sashes illustrating the application of the invention, and a p Figure 2 is a view taken substantially at right angles to Figure 1 and further illustrating the invention.

Referring to the drawings by reference numerals it will be seen that 5 indicates a side rail of a lower sash and 6 indicates the side rail of an upper sash. 4

In accordance with the present invention each of the rails 5 and 6 is provided in the outer edge thereof with a longitudinal groove 1 in whichis secured through the medium of screws or other fastening elements 8 a rack barS.

Each rack bar 9 is corrugated transversely thereby forming alternate concave and convex portions Il) and respectively.

Also for each sash, and cooperating withrthe rack bar 9 provided therefor, is a catch assembly which, in the present instance, consists of a mounting plate I2 secured to the window frame I3 through the medium of screws or other fastening elements I4 and disposed opposite a slot I5 provided in the frame.

In connection with the above it will be` understood that the mounting plate I2 forming part of the catch assembly provided for the lower sash, is mounted on the frame I3 at one side of the parting strip with which the frame is usually equipped, while the mounting plate I 2 for the 50 catch assembly provided for the upper sash 3 is mounted on the frame I3 at the opposite side of the parting strip (not shown).

Each mounting plate l2 has extending inwardly therefrom through the slot I5 a pair of bracket arms I6 between which is pivoted as at II an intermediate portion of a lever I8 that is somewhatl sinuous in side elevation as shown in Figure Furthermore the lever I8 as shown in Figure 2 is substantially U-shaped, and rotatably supported between the sides of the lever at the open end of the U is a roller I9 that serves as a catch or detent and is normally urged outwardly through a slot provided therefor in the mounting plate I2 to engage the corrugated surface of v the rack 9 through the medium `of a coil spring 2|. Coil spring 2| has one end disposed against the inner side of the mounting plate I2 and an opposite end suitably connected with and bearing against the free end of the lever I8.

In connection with the above it will be noted that the lever I8 forming part of the catch assembly for the lower sash is disposed downwardly while the lever I8 forming part of the catch assembly for the upper sash is disposed upwardly as clearly shown in Figure 1.

Further in accordance with the present invention the mounting plate I2 of each assembly has pivoted to the inner side thereof as at 22 a latch bar 23 that has the free end thereof extending between the sides of a lever I 8 and at said end is provided with a suitably shaped notch 24 with` which is cooperable a keeper pin 25 bridging the space between ,the sides of the lever I8. The latch bar 23 is normally urged in a direction to engage notch 24 thereof with pin 25 whereby to secure the lever I8 against rocking movement on its pivot I1 through the medium of a coil spring 26 which at one end is suitably connected with the latch bar 23 and at its opposite end is suitably anchored to one of the bracket arms I6.

It will thus be seen that with the notch 24 of the latch bar 23 engaged with the pin 25 lever I8 will be held against rocking movement and consequently the detent roller I9 engaging in `a concave portion I0 of the rack bar will serve to secure the window sash against being raised or lowered as the case may be.

Further in accordance with the present invention means is provided whereby the levers I8 may be simultaneously locked or released as desired. To this end there is provided a substantially S-shaped locking bar 2l which intermediate its ends is pivoted as at 28 within a slot 29 provided therefor in an internal partition 3|] within the window frame I3 as shown in Figure 2. One end 21a of the lacking bar 21 extends downwardly at one side of the partition 38 and has a beveled terminal 3| engageable with a beveled lug 32 on the free end of the latch bar 23 of the lower sash rail latch assembly while the other arm 21h of the locking bar 21 extends upwardly at the opposite side of the partition 30 and is provided with a beveled terminal 33 that is engageable with a complementarily beveled lug 34 provided on the free end of the latch bar 23 forming part of the upper sash latch assembly. It will thus be seen that when the terminals 3I, 33 are engageable with the lugs 32, 34 as shown in Figure 2, latch bars 23 against the action of springs 26 are urged to a position disengaging notches 24 and pins 25 thus permitting the levers I8 to swing freely on their pivots I1 to the end that the sashes 5 and 6 may be raised or lowered as found desirable. When however 'the locking bar 21 is rocked, in a manner hereinafter made manifest, to disengage the terminals 3l, 33` from the lugs 32, 34 latch bars 23 in response to the action of springs 26 will swing in a direction to engage the notches 24 thereof with the pins 25 thereby locking the levers I8 against swinging movement on their pivots I1 and thereby secure the window sashes 5 and 6 against being raised or lowered, and consequently in the desired position of adjustment.. Y Y

From operating the lock bar 21'there are provided push buttons 35, 36 that are slidablysupported by a plate 31 suitably mounted on the inner sides of the lWindow frame I3 and secured thereto through the medium of screws or other `fastening elements 38. Plate 31 has extending therefrom and through a slot 39 provided therefor in said face or side 4of therframe I3 a pair of lugs or ears 4U Ybetween which is pivoted as at 4I a lever 42. Lever 42 is pivoted to the inner ends of the push buttons 35, 36 as at 43 and 44, respectively, andintermediate its ends lever 42 is pivoted as at 45 to an extension 46 provided on the bar 21 intermediate the ends of the bar.

A spring 41 is suitably anchored at one end to one of the ears 40 and at an opposite end is connected with the pivot 45 and serves to hold the lever 42 and associated parts in the position to which it is swung incidental lto an inward movement of ,either of the push buttons 35, 36;

In Figure 2 the parts are shown in the position occupied when the sashes are unlocked. Obvi- Vously to lock the sashes the operator pushes inwardly on the button 35 causing the lever 42 to swing about its pivot for projecting the button 36 and at the same time to swing thelo'cking bar 21 on its pivot 28v and in a direction to move the terminals of the arms of the bar 21 out of engage.- ment with the latch bars 23 permitting the bars 23 t'oswing `rin `response to 'the action of springs 26 in a direction to engage the notches 24 thereof with the pins 25 and thereby secure the levers I8 against swinging movement and consequently the sashes 5 and 6 in locked position.

`When it is desired to unlock the sashes the operator then pushes inwardly on the push button 36 thus returning the parts to the position shown in Figure 2, and in which position, with the terminals of the arms 21a, 21b of lock bar 21 engaging the latch bars 23 the latter are moved against the action of springs 26 to disengage the notches 24 from the pins 25 thus leaving the levers I8 free to swing on their pivots I1 and consequently permitting the sashes 5 and 6 to be raised or lowered as found desirable.

It is thought that a clear understanding of the construction utility and advantages of an invention of this character will be had without a more detailed description.

Having thus described the invention what is Vclaimed as new is:

1. In a window holder and lock, and in combination with a window frame, detents mounted on the frame one for a lower window sash, and the other for an upper window sash, and each of said detents including a pivoted lever provided with a keeper pin, a spring-biased latch bar for each lever having a free end provided with a notch to engage said keeper pin whereby to lock the lever against swinging movement, a locking bar pivn otally mounted intermediate itsends interiorly of rthe window frame and having one end arranged to engage vthe latch bar of one detent and a second end arranged to engage the latch lbar of the other detent whereby to move said latch bars simultaneously out of engagement with the keeper pins, and manual means operable exteriorly of the frame for swinging the lock bar into and out of engagement with the latch bars.

2. In a window holder and lock, and in combination with a .window frame, detents mounted on the frame one for a lower window sash, and the other for an upper Window sash, and each of said detents including a pivoted lever provided with a keeper pin, a spring-biased latch bar for I each lever having a free end provided with a notch to engage said keeper pin whereby to lock the lever against swinging movement, a locking bar pivotally mounted intermediate its ends interiorly of the window frame and having one end arranged to engage the latch bar of one detent and a second end arranged to engage the latch bar of the other detent whereby to move said latch bars simultaneously out of engagement with the keeper pins, a pair of push buttons operable from one side of said frame and slidably mounted on the frame, link means operatively connecting said push buttons with the locking bar for transmitting movement of a push button to the llocking bar to 'swing the latter in a desired direction, and a spring device associated with said link means and acting to yieldably retain the lock bar in the position to which it moves in response to Van inward movement of a push button.

CLAUDE E. AXIELL. 

